Patents by Inventor Alexander P. L. M. Zandee

Alexander P. L. M. Zandee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for correcting the relative motion of a transmitter and a receiver in airborne electromagnetic prospecting
    Patent number: 4629990
    Abstract: A method and apparatus for improving signals used for detecting conductive bodies in an area by means of an airborne electromagnetic survey system, comprising the steps of generating and transmitting an AC primary field signal, the frequency spectrum of which comprises a DC component or a low frequency component, and radiating this primary field signal to the said area and receiving induced secondary field signals which are generated by the said conductive bodies and further comprising the step of processing the received secondary field signals and representing the processed signals in order to derive information whether or not conductive bodies in the said area are present.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: December 16, 1986
    Assignee: Shell Internationale Research Maatschappij, B.V.
    Inventor: Alexander P. L. M. Zandee